Why Your Local University Lab Uses More Power Than You’d Think

Why Your Local University Lab Uses More Power Than You’d Think

Behind the walls of research buildings, a quiet energy and waste problem has been building for years — one that new industry data is only now bringing into full view.

According to a detailed breakdown from BestLabTech, laboratories typically burn through five to ten times more energy than an office space of the same size, with that gap widening to as much as 100 times in facilities equipped with clean rooms. The reason comes down to airflow requirements: labs need six to ten complete air changes every hour, compared to about one in a standard office, and that ventilation runs continuously, day and night.

The freezer problem nobody talks about

One of the biggest single energy drains sits quietly in the corner of most labs: the ultra-low-temperature freezer. Set to -80°C, these units can pull close to 20 kilowatt-hours a day, roughly what a small household consumes. Yet a University of Edinburgh study found that simply nudging the set point up to -70°C cuts that usage by nearly 30%, with zero cost and no new hardware required. Backup freezers show even bigger returns, saving 42% when run at -60°C instead of -80°C.

Fume hoods carry a similar story. An untreated hood can run up to $3,000 a year in operating costs, but institutions that manage sash height see dramatic savings — Harvard’s sash-closing initiative recovered around 70% of the associated ventilation energy, translating into a quarter-million dollars saved annually.

Plastic waste adds up fast

Energy isn’t the only overlooked cost. A single researcher generates an estimated 116 kilograms of plastic waste per year on average, though that number ranges widely — from 32 to nearly 237 kilograms — depending on what kind of experiments are being run. Multiplied across roughly 20,500 research institutions worldwide, older estimates put the global total at 5.5 million tonnes annually, a figure still frequently cited despite methodological debate.

Most of this waste comes down to a short list of everyday items:

• Serological pipettes (about 16% of total plastic waste by weight)
• Pipette tip boxes
• Multiwell plates
• Gloves and general packaging

The good news is that reuse strategies genuinely work. Running a consumable through even one reconditioning cycle cuts its plastic footprint in half, and five cycles push that reduction to 80%, all without compromising experimental accuracy.

Certification programs are gaining ground — mostly in industry

Formal sustainability certification is spreading, though unevenly. More than 4,500 labs across 54 countries now carry My Green Lab certification, and pharmaceutical companies are driving most of that growth — Biogen reached full certification across its labs two years ahead of schedule, while Sanofi is closing in on 95%. Universities, by comparison, are certifying at a much slower pace, a gap that appears tied more to program design than funding. Certified labs save an average of 29,000 kilowatt-hours annually, and some academic programs have banked well over a million dollars in cumulative savings.

Water use mirrors these energy patterns: labs consume about five times more water per square meter than typical office buildings, and at some institutions, lab water use makes up 60% of total campus consumption. Single-pass cooling systems in chemistry labs are particularly wasteful, capable of using close to a million liters per reaction over a year.

Autoclaves deserve particular attention here, since a single cycle can use up to 228 liters of water, adding up to roughly 2,955 liters a day in labs that run them constantly. That’s a substantial draw for a piece of equipment most people outside the research world have never heard of. Reuse strategies extend beyond plastic, too — researchers running consumables through reconditioning cycles report climate benefits alongside the waste reduction, with up to 4.5 tonnes of CO2 equivalent saved per tonne of plastic across five cycles, even after accounting for the footprint of the reconditioning process itself. One caveat worth noting: this approach depends on reconditioning infrastructure that most individual labs simply don’t have on-site, which is part of why adoption remains uneven even among labs that would otherwise benefit. Institutions like UCSF have shown what’s possible at scale: replacing 43 outdated freezers with modern, efficient models cut annual energy use by over 310,000 kilowatt-hours, saving nearly $56,000 a year with an eight-year payback period — proof that infrastructure upgrades, not just behavioral changes, can move the needle significantly.

Looking at the bigger picture, the pharmaceutical sector’s carbon footprint climbed 77% between 1995 and 2019, well ahead of the 49% rise in global emissions overall during the same period — with roughly three-quarters of that footprint tied to supply chains rather than lab operations themselves.

None of this suggests labs are short on answers. Freezer temperatures, fume hood management, and consumable reuse are all low-cost changes available right now. The real barrier isn’t innovation — it’s getting these known fixes adopted widely and kept in place.